Updates for v0.5.0

[earmingol]

• Added the option of use layers for TF-IDF analysis
• Included function to generate 3D tensor for tensor decomposition analysis (sccellfie.external.tensor.py)
• Fixed minor bugs for tests.

[codecov]

Codecov Report

❌ Patch coverage is 95.02075% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 97.52%. Comparing base (30a326a) to head (8884738).
⚠️ Report is 14 commits behind head on main.

Files with missing lines	Patch %	Lines
sccellfie/external/tensor.py	88.65%	11 Missing ⚠️
sccellfie/external/tf_idf.py	93.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #22      +/-   ##
==========================================
- Coverage   97.69%   97.52%   -0.17%     
==========================================
  Files          78       80       +2     
  Lines        5375     5461      +86     
==========================================
+ Hits         5251     5326      +75     
- Misses        124      135      +11     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.